having trouble to insert text in GUI table

I want to make a table, 'uitable', with 4 collumns and a variable number of rows. The number of rows is determined by an edit text box, 'edit1'. The problem is that I want to insert text in the first collumn, but as soon as i insert any caracter that is not a number, the cell automatically goes to NaN. Can you help me?

edit1 = str2num(char(get(hObject,'String')));
 if ~isempty(edit1) && edit1>0
     edit1 = ceil(edit1);
     data = cell(edit1,4);
     % convert the values matrix to a cell array
     valuesAsCell = mat2cell(data);
     % update the table
     set(handles.uitable,'Data',valuesAsCell{:});
 end

Answer 1

[Geoff Hayes]

Diogo - this may be a problem that is similar to http://www.mathworks.com/matlabcentral/answers/169197-nan-elements-during-table-data-input-matlab-gui. Your line of code

 data = cell(edit1,4);

creates the cell array where each element is the empty array, []. If you try to populate any of these elements with strings, then you see NaN. Try instead to initialize this array to one of empty strings and reduce your code to simply

 data = cell(edit1,4);
 data(:) = {''};

 % update the table
 set(handles.uitable1,'Data',data);

I used the above code in a simple GUI, and was able to enter non-numeric data in any column (as well as numeric data which will still be considered as a string). Note that I removed the code to convert the array to a cell array (the call to mat2cell) since data is already a cell array.

[Diogo Queirós]

aaaaaannnnnddd IT WORKS!!

thanks Geoff! sorry for my poor search of the problem

[Geoff Hayes]

Glad it worked out, Diogo!

Answer 2

[Zoltán Csáti]

It is because you supplied a string. Convert it to number.

edit1 = str2num(edit1);
edit1 = ceil(edit1);
...

[Diogo Queirós]

its already in number. check the first line.

edit1 = str2num(cha* r(get(hObject,'String')));
 if ~isempty(edit1) && edit1>0
...

what i meant was, when inserting data in the UI table, the first collumn must be a string, the other 3 are numbers. For example, for edit1=3:

String | | Number | | Number | | Number

ex1 | | 15 | | 2034 | | 3000

ex2 | | 35 | | 2064 | | 2056

ex3 | | 21 | | 2012 | | 2076

with my code i can´t insert the string on the first collumn, but the construction of the table and the other collumns work fine.

[Zoltán Csáti]

Could you send me your program. I would look at it.

[Diogo Queirós]

the gui is in portuguese, in case you need to translate. thank you in advance!